<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../react18/react.development.js"></script>
    <script src="../../react18/react-dom.development.js"></script>
    <script src="../../react18/babel.min.js"></script>
</head>

<body>
    <div id="app"></div>
    <script type="text/babel">
        class App extends React.Component{
            state={
                name:true,
                change:'变身'
            }
            render(){
                const {name,change}=this.state
                return (
                    <div>
                        <h1>你相信光吗</h1>
                        <h2>{name?'大古':'迪迦'}</h2>
                        <button onClick={this.handle}>{change}</button>
                    </div>
                )
            }
            handle=()=>{
                let {name}=this.state
                this.setState({
                    name:!name
                })
            }
        }
        const root = ReactDOM.createRoot(document.getElementById('app'))
        root.render(<App />)
    </script>
</body>

</html>